Profiles other than SINGLE for mixed chunks might sound a bit strange,
but there is nothing in the filesystem that prevents a crazy user from
doing it. So make "btrfs fi df" report them properly.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
During the commands:
- btrfs filesystem show
- btrfs device scan
the devices "scanned" are extracted from /proc/partitions. This
should avoid to scan devices not suitable for a btrfs filesystem like cdrom
and floppy or to scan not existant devices.
The old behavior (scan all the block devices under /dev) may be
forced passing the "--all-devices" switch.
Check whether there are the right number of arguments (exatly 2 without
the flag -r) in the subcommand handler for the btrfs subvolume snapshot
command.
Signed-off-by: Andreas Philipp <philipp.andreas@gmail.com>
Add subcommand to get the default subvolume of btrfs filesystem
V2->V3:
* add man page
* based on http://git.darksatanic.net/repo/btrfs-progs-unstable.git
integration-20110705
Reviewed-by: Andreas Philipp <philipp.andreas@gmail.com>
Reviewed-by: Goffredo Baroncelli <kreijack@libero.it>
Reported-by: Yang, Yi <yi.y.yang@intel.com>
Signed-off-by: Zhong, Xin <xin.zhong@intel.com>
Stephane Chazelas and Andreas Philipp spotted that the earlier patch
fixing this issue was incomplete, and should also update the argument-
count checking code as well.
Signed-off-by: Hugo Mills <hugo@carfax.org.uk>
- scrub commands added
- open_file_or_dir no longer static (needed by scrub.c)
Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net>
Signed-off-by: Hugo Mills <hugo@carfax.org.uk>
There was some discussion on "where" subvolumes live in. Why do we not
simply print the parent ID for each subvolume in btrfs subvolume list?
This patch adds this functionality when called with parameter "-p".
Signed-off-by: Andreas Philipp <philipp.andreas@gmail.com>
Signed-off-by: Hugo Mills <hugo@carfax.org.uk>
gcc-4.4 complains (rightly) that the strncpy has a limit too large for
the array it's copying into. Use the correct array length.
Signed-off-by: Hugo Mills <hugo@carfax.org.uk>
Use BTRFS_IOC_CREATE_SNAP_V2 instead of BTRFS_IOC_CREATE_SNAP and add
an option for the creation of a readonly snapshot.
Signed-off-by: Andreas Philipp <philipp.andreas@gmail.com>
Signed-off-by: Hugo Mills <hugo@carfax.org.uk>
Discard the whole device before starting to create the filesystem structures.
Modelled after similar support in mkfs.xfs.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Hi all,
this patch adds the command "btrfs filesystem label" to change (or show) the
label of a filesystem.
This patch is a subset of the one written previously by Morey Roof. I
included the user space part only. So it is possible only to change/show a
label of a *single device* and *unounted* filesystem.
The reason of excluding the kernel space part, is to simplify the patch in
order to speed the check and then the merging of the patch itself. In fact I
have to point out that in the past there was almost three attempts to propose
this patch, without success neither complaints.
Chris, let me know how you want to proceed. I know that you are very busy,
and you prefer to work to stabilize btrfs instead adding new feature. But I
think that changing a label is a *essential* feature for a filesystem
managing tool. Think about a mount by LABEL.
To show a label
$ btrfs filesystem label <device>
To set a label
$ btrfs filesystem label <device> <newlabel>
Please guys, give a look to the source.
Comments are welcome.
You can pull the source from the branch "label" of the repository
http://cassiopea.homelinux.net/git/btrfs-progs-unstable.git
Regards
G.Baroncelli
Signed-off-by: Chris Mason <chris.mason@oracle.com>
[Btrfs-Progs][V2] Update for lzo support
- Add incompat flag, otherwise btrfs-progs will report error
when operating on btrfs filesystems mounted with lzo option.
- Update man page.
- Allow to turn on lzo compression for defrag operation:
# btrfs filesystem defragment -c[zlib, lzo] <file>
Note: "-c zlib" will fail, because that's how getopt() works
for optional arguments.
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
So alot of crazy people (I'm looking at you Meego) want to use btrfs on phones
and such with small devices. Unfortunately the way we split out metadata/data
chunks it makes space usage inefficient for volumes that are smaller than
1gigabyte. So add a -M option for mixing metadata+data, and default to this
mixed mode if the filesystem is less than or equal to 1 gigabyte. I've tested
this with xfstests on a 100mb filesystem and everything is a-ok.
Signed-off-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Hi Chris,
below is enclosed a trivial patch, which has the aim to improve the error
reporting of the "btrfs" command.
You can pull from
http://cassiopea.homelinux.net/git/btrfs-progs-unstable.git
branch
strerror
I changed every printf("some-error") to something like:
e = errno;
fprintf(stderr, "ERROR: .... - %s", strerror(e));
so:
1) all the error are reported to standard error
2) At the end of the message is printed the error as returned by the system.
The change is quite simple, I replaced every printf("some-error") to the line
above. I don't touched anything other.
I also integrated a missing "printf" on the basis of the Ben patch.
This patch leads the btrfs command to be more "user friendly" :-)
Regards
G.Baroncelli
btrfs-list.c | 40 ++++++++++++++++++++++--------
btrfs_cmds.c | 77 ++++++++++++++++++++++++++++++++++++++++-----------------
utils.c | 6 ++++
3 files changed, 89 insertions(+), 34 deletions(-)
Signed-off-by: Chris Mason <chris.mason@oracle.com>
btrfs-subvol find-new <subvol> <id> will search through a given subvol
and print out all the files with extents newer than a given id.
Care must be taken to make sure any pending delalloc is on disk before
running this because that won't show up in the output.
This goes along with the new space info ioctl. This will spit out the space
info all nice and pretty with the type, it's flags (DUP, RAID) and how much
space is in that group and how much is in use.
Signed-off-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit introduces a new command called 'btrfs' for managing
a btrfs filesystem. 'btrfs' handles:
- snapshot/subvolume creation
- adding/removal of volume (ie: disk)
- defragment of a tree
- scan of a device searching a btrfs filesystem
- re-balancing of the chunk on the disks
- listing subvolumes and snapshots
This has also been updated to include the new defrag range ioctl.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Ilya Dryomov
Goffredo Baroncelli
Andreas Philipp
Zhong, Xin
Hugo Mills
Jan Schmidt
Christoph Hellwig
Li Zefan
Josef Bacik
Goffredo Baroncelli
Eduardo Silva
Chris Mason
ghigo